Effect of concurrent inclusion of two type fillers, i.e. OMMT and NOR, on rheological, morphological, thermal and flame retardant properties of the PP/PEVA blends has been studied. The co-continuous morphology became finer with OMMT, NOR and OMMT/NOR inclusion. The result of rheological study revealed that the polymer blend and the NOR loaded composite possess liquid-like, whereas the OMMT composites represent solid-like behavior. Moreover, in OMMT loaded composite, a G’ and G” crossover in low frequency range appeared due to formation of network-like structure between OMMT layers. Thermogravimetric analysis corroborated the concurrent inclusion of OMMT and NOR in nitrogen atmosphere decreases To by 2%, increases the Tmax1 by 0.9% and increases Tmax2 by 2% comparing the blended composition. The results of microscale combustion calorimetry showed that concurrent incorporation of OMMT and NOR decreases the peak heat release rate and total heat release by 32% and 4% comparing the polymer blend, respectively.
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